Valve



May 5, 1925.

1 ,536,289 J. B. GATS VALVE Filed Dec. 20, 1922 JLwrZzb/P I QBH/VE, @9715 Patented May 5, 1925.

UNITED STATES PATENT OFFICE.

JOHN B. GATS, OF CHICAGO, ILLINOIS, ASSIGNOR TO AARON M. SEALES, OF CHICAGO, ILLINOIS.

VALVE.

Application filed December 20,1922. Serial No..607,955.

To all whom it may concern:

Be it known that I, JOHN B. (hrs, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful. Improvements in Valves, of which the following is a specification.

This invention relates to improvements in valves.

One of the objects of the invention is to provide an improved valve of the poppet valve type.

Another object is to provide a laminated valve having more or less resiliency and an ranged to be seated upon an approximately flat, but slightly curved, surface.

A further object is to provide a valve having a seating surface made of a metal to which free carbon will not adhere.

Another object is to provide a valve struc ture in which there is a slight radial move ment of the valve on its seat, whereby to produce a rubbing friction contact to clean the valve and seat surfaces.

Another object is to provide an improved manner of connecting a plurality of valve parts to its stem.

Other objects and advantages will clearly appear fro-1n a consideration of the follow ing description taken in conjunction with the accon'ipanying drawing, forming a part hereof, wherein Fig. 1 is a central section through the valve and its seat. 1

Figs. 2, 3 and at are elevations of the valve stem showing it in different stages of its development.

Fig. 5 is a top plan view of the valve structure before the stem is secured thereto.

In all the views the same reference characters are employed to indicate corresponding parts.

The valve consists of a'plurality of parallel disks 11-12, perforated as shown in Figs. 1 and 5, at 13, with laterally extending notches 1414.

The valve stem 15 is formed of a rod 16 upset near one end at 17 then turned down to form a tenon 18 and a shoulder 19. After this has been done, laterally extending wings 2020' are formed in the tenon to enter the notches 14.14: to prevent the valve for turning on its stem. The end 18 is now expanded, as shown at 21 in Fig. 1 to hold the disks on the stem. heat and pressure.

After the disks 11-12 have been fastened on the stem 15 another disk 22 is forced over the stem 15 and turned over the edges of the disks 11 and 12 at their edges, as at 23. This disk also overlies the enlargement 17 by a part 24: enclosing it.

The disk 24 is, preferably, Monel metal which, I have discovered, has no affinity whatever for the free carbon resulting from explosions of the charges of internal combustion engines. In other words, free carbon will not adhere to the seating surface of a valve which is made of Monel metal. It may also be advantageous to have the valve seat faced with this metal.

The seat 25, upon which the valve 10 is seated, is curved as shown, on slightly longer radii than the curve of the dished valve 10, when the latter is not seated, as shown in full lines and broken lines, respectively, in Fig. 1. When the valve is seated, the curvature of the valve and of the seat is substantially the same.

The valve 10 is made up of dished disks wilth the stem extending from the concave s1 e.

Pressure from within a cylinder tends to straighten the valve and make it conform more intimately with the surface of the valve seat. Of course, in operations of this character we are dealing with exceedingly small measurements and the relative dimensions and relations shown by the drawing are necessarily exaggerated to be apparent.

Another advantage, of a more or less yielding valve body, is the quietude of its operation, and the absence of injury due to impact of the seating surfaces. These advantages are attained by the conical forma tion of the valve together with its lack of rigidity.

IVhile I have herein shown a single embodiment of my invention for the purpose of clear disclosure, it will be manifest to persons skilled in the art, that many changes may be made in the general arrangement and configuration of the parts, within the scope of the following claims.

I-Iaving described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A valve structure comprising a valve This may be done by bore and extending outwardly therefrom in all directions on a curve drawn about longer radii than the curve of the valve When not seated.

8. A valve structure comprising a yielding valve having a concave seating surface and a convex valve seat of a different curve.

In testimony whereof I hereunto subscribe my name.

JOHN B. GATS. 

